How many hours should my dog fast before surgery?
The night before the surgery, most pets should have fasted for at least 12 hours before going to admission for surgery or what your veterinarian instructed.
What happens if dogs eat before surgery?
The most important thing you can do the morning of your dog’s surgery is make sure he does not have access to food or water. Eating and drinking could cause your dog to aspirate during anesthesia, which is potentially life-threatening. Many veterinarians will have you drop your dog off at their office in the morning.